Projects Projects

Simple 78xx Current Booster

Simple 78xx Current Booster

Description Voltage regulators such as the LM78xx, and LM317 series (and others) sometimes need to provide a little bit more current then they actually can handle.


3 comments Not Tested
1.2v LED Flasher – Joule thief

1.2v LED Flasher – Joule thief

This is a 1.2-volt single transistor flyback (Joule Thief) circuit that features a third coil.


3 comments Not Tested
13.8V/40A Stabilized Power Supply

13.8V/40A Stabilized Power Supply

This power supply was designed for ham-radio use and has been in operation for over 10 years.


4 comments Not Tested
Dual Voltage Power Supply

Dual Voltage Power Supply

Description The following circuit Diagram of (DUAL VOLTAGE POWER SUPPLY ) can be used for Misc..


3 comments Tested
1.2 – 15V/3A adjustable regulated power supply

1.2 – 15V/3A adjustable regulated power supply

Specifications This kit provides a variable output power supply ranging from 1.2 to 15 V @ 3 A.


11 comments Tested
Pulse Charger for reviving tired Lead Acid batteries

Pulse Charger for reviving tired Lead Acid batteries

Description If you own a motorcycle, a motor home, a caravan, a lawn mover, a day cruiser or maybe a vintage car you must at some point had to write off a lead acid battery.


8 comments Not Tested
400VA AC Light Dimmer

400VA AC Light Dimmer

Schematic Description This is a simple TRIAC AC load dimmer used to control the power of a resistive load such as incandescent lamp or heater element.


1 comment Tested
3-30 V/2.5 A Stabilized power supply

3-30 V/2.5 A Stabilized power supply

Copyright of this circuit belongs to smart kit electronics.


15 comments Tested
0-50V 2A Bench power supply

0-50V 2A Bench power supply

I use the lm10 IC because it has a reference voltage and that’s useful for dc power supply.


10 comments Not Tested
13.8V 20A power supply

13.8V 20A power supply

Regulated DC power supply, short circuit safe, and with current limiter.


6 comments Not Tested
0-30 Vdc Stabilized Power Supply with Current Control 0.002-3 A

0-30 Vdc Stabilized Power Supply with Current Control 0.002-3 A

The copyright of this circuit belongs to smart kit electronics.


256 comments Tested
MAX2606 – Hands-Free Car Kit for Cell Phones

MAX2606 – Hands-Free Car Kit for Cell Phones

This project is car hands free that retransmits the audio signal from a cell phone to the FM broadcast band.


3 comments Tested